The Walking Dead returns next Sun., Oct. 14 at 9/8c. Which may leave the uninitiated panicking about how they can possibly catch up in time. Fear not! On Sat., Oct. 13 at 10AM/9c, AMC begins a two-day The Walking Dead marathon on-air covering the full series to date. First comes all six episodes of Season 1 back-to-back on Saturday starting at 10/9c. Immediately afterwards, Season 2 airs in its entirety throughout Saturday then again on Sunday, all leading right into the Season 3 Premiere, “Seed” at 9/8c.